Kia Optima Hybrid (2011)

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    Interior Features
    Test drivers say the Rio and Rio5 have easy-to-read gauges and generally like the layout of the dash, but the praise ends there. The Rio’s barebones interior comes with a four-speaker audio syst ...

    Air cleaner
    Element replacement Have the air cleaner element checked and replaced in accordance with the maintenance schedule. NOTICE Do not drive with the air cleaner removed; this will result in excessi ...

    Engine number
    The engine number is stamped on the engine block as shown in the drawing. ...